1"""Test that lldb works correctly on compile units form different languages.""" 2 3 4import re 5import lldb 6from lldbsuite.test.lldbtest import * 7 8 9class MixedLanguagesTestCase(TestBase): 10 def test_language_of_frame(self): 11 """Test that the language defaults to the language of the current frame.""" 12 self.build() 13 exe = self.getBuildArtifact("a.out") 14 self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) 15 16 # Execute the cleanup function during test case tear down 17 # to restore the frame format. 18 def cleanup(): 19 self.runCmd( 20 "settings set frame-format %s" % self.format_string, check=False 21 ) 22 23 self.addTearDownHook(cleanup) 24 self.runCmd("settings show frame-format") 25 m = re.match('^frame-format \(format-string\) = "(.*)"$', self.res.GetOutput()) 26 self.assertTrue(m, "Bad settings string") 27 self.format_string = m.group(1) 28 29 # Change the default format to print the language. 30 format_string = "frame #${frame.index}: ${frame.pc}{ ${module.file.basename}\`${function.name}{${function.pc-offset}}}{, lang=${language}}\n" 31 self.runCmd("settings set frame-format %s" % format_string) 32 self.expect( 33 "settings show frame-format", 34 SETTING_MSG("frame-format"), 35 substrs=[format_string], 36 ) 37 38 # Run to BP at main (in main.c) and test that the language is C. 39 self.runCmd("breakpoint set -n main") 40 self.runCmd("run") 41 self.expect("thread backtrace", substrs=["`main", "lang=c"]) 42 # Make sure evaluation of C++11 fails. 43 self.expect("expr foo != nullptr", error=True, substrs=["error"]) 44 45 # Run to BP at foo (in foo.cpp) and test that the language is C++. 46 self.runCmd("breakpoint set -n foo") 47 self.runCmd("continue") 48 self.expect("thread backtrace", substrs=["`::foo()", "lang=c++"]) 49 # Make sure we can evaluate an expression requiring C++11 50 # (note: C++11 is enabled by default for C++). 51 self.expect("expr foo != nullptr", patterns=["true"]) 52